Band-saw.



. OPTEN BERG.

M. A. FRONEY & 1-.

BAND SAW.

APPLICATION FILED MAY 20, 1912.

Patented Bea 17,1912.

2 SHEETS-8HEBT 1.

WQQM' COLUMBIA PLANOURAPH bo wAsr-uNuTgN n. 5

M. A. FRONBY &; .T. H. OPTENBERG.

BAND SAW.

APPLIOATIONTILED MAY 20, 1912.

Patented Dec. 17,1912.

2 SHEETFr-SHBBT 2.

COLUMBIA PLANOGRAFH 00.. WASHINGTON, n. c.

lit)

ITED STATES PATENT OFFICE.

MAYNARD A. FRONEY AND JOHN H. OPTENBERG, OF SI-IEBOYGAN, WISCONSIN.

BAND-SAW.

1AM? A965.

Specification of Letters Patent.

Patented Dec. 17,1912.

To all whom it may concern:

Be it known that we, MAYNARD A. FnoNEY and JOHN H. ()r'rnl cnne, both c1t1- Sheboygan, in the county of Sheboygan and State of \Visconsin, have invented certain new and useful Improvements in Band- Saws; and we do hereby declare that the following is a full, clear, and exact description thereof.

Our invention refers to band-saws and has for its object to provide a simple, economical and effective table therefor, that is capable of rotatory and reciprocative movements about the working stretch of the saw-blade, the invention being particularly applicable for butchers use whereby a variety of meats may be placed upon the table and selectively alined and cut into the desired portions, the table being rotated about the working stretch of the saw-blade for selecting the variety of meat and after the particular variety of meat is alined with the blade said table is reciprocated to effect a cutting operation.

Specific objects of our invention are to provide a saw-frame having a table carrying runway that is arranged parallel with the faces of the cutting stretch of the saw-band; to provide a block that is slidably mounted upon the runway, the block having a hollow sleeve and a slotted throat through which the working stretch of the blade is adapted to pass incidental to a reciprocating movement of said block, theslotted throat being alined with the saw-blade; to provide a table having a plurality of radial slots that intersect a similarly slotted hollow table hub. which hub is revolubly mounted upon the block-sleeve; to provide means in connection with the rotary table for locking the same against rotation relative to the block-sleeve; to provide a saw-blade guide in the form of a kerfed boot, which boot projects into the path of travel of the ho]- low sleeve and is adapted to enter the same through. its throat aperture incidental to the table being moved to a position for rotatory adjustment; to provide means in connection with the table for feeding the sections of meat or other article across the cutting plane of the saw.

With the above and other objects in view the invention consists in certain peculiarities of construction and combination of parts as invention, but is of standard type.

set forth hereinafter with reference to the accompanying drawings and subsequently claimed. Zens of the United States, and residents of In the drawings Figure 1 represents a side elevatlon of a band-saw provided with a table embodying the features of our invention, the view being taken from the front or feed side .of the saw, with the table in section as indicated by line 11 of Fig. 2; Fig. 2, a detailed plan view of the worksupporting table; Fig. 3, a detailed cross section of the same, the section being indicated by line 3-3 of Fig. 2; Fig. 4, a detailed cross-section of said table, the section being indicated by line 44 of Fig. 3; Fig. 5, a detailed inverted sectional plan view, the section being indicated by line 55 of Fig. 4; Fig. 6, a detailed sectional plan view showing the guide-block and runway, the section being indicated by line 66 of Fig. 3; Fig. 7, a perspective view of one of the table hub sections; Fig. 8, a perspective view of the saw-guide boot, and Fig. 9, a perspective view of the slidable block.

Referring by characters to the drawings 1 represents a standard having upper and lower arms 2, 2, respectively, in the form of a continuous loop that projects from said standard and together therewith constitutes a saw-frame. Mounted upon a stud carried by the upper arm is an idle bandwheel 8, there being a similar driven bandwheel 8 journaled upon a drive-shaft 4 that is mounted in the standard. The wheels 3 and 3 serve as carriers for an endless saw-band 5, which band and its accompanying mechanism constitutes no part of olur T e head of the lower frame-arm 2 carries a ihorizontally disposed runway 6 that extends parallel to the flat faces of the working stretch of the saw-band, the said runway being provided with a centrally arranged slot 7 in its base, that extends from its front end inwardly to the frame arm through which slot the working stretch of the sawband travels. Projecting upwardly through to the frame-arm 2' by bolts 9, which bolts also serve as means for securing the runway to said arm, the bolts being passed through apertures in a web 6 that depends from the runway base. Thus said bolts securely clamp the runway web and boot web upon opposite sides of the frame arm whereby a rigid connection is made between these parts.

The edges of the runway 6 terminate with grooved rails 6" for the reception of anti-friction rollers 10, which rollers are journaled upon studs that project from edges of a slidable block 11. This block is formed with a centrally disposed upwardly extending sleeve 11, the front wall of which together with the body of the block is slotted to form a throat 11", for the purpose of permitting entrance of the boot within the block sleeve, incidental to a forward movement of said block. Journaled upon the block sleeve is a sectional flanged hollow hub 12, that serves as a support for a centrally apertured revoluble table 13, the same being secured to the hub flanges by rivets that pass throughthe table. The said hub members when assembled are spaced apart longitudinally in such relation to each other as to form a plurality of radially disposed slots, which slots are adapted to be alined with the throat slots 7 of the slidable block, incidental to a reciprocative feed movement of the table to be hereinafter described. The slots formed by the hub are alined with or intersected by a plurality of radially arranged saw-receiving slots 14 in the table that extend to a point adjacent to the edge of said table with the exception of one, which latter extends through the table edgefor the purpose of adjusting said table about the working stretch of the saw-blade. The table 13 is braced by a series of radially extending spokes 16, the inner ends of the spokes being seated within recesses of the members, forming the table hub 12. The outer ends of the spokes are riveted or otherwise secured to the downturned edge of the table and said spokes are adjusted as to length by thrust nuts 16 which are in threaded union with the inner ends of the spokes and adapted to impinge against the hub members. Thus the load strain to which the table is subjected is opposed to prevent sagging of said table. The table is adapted to be rotated by hand upon the sleeve extension of a block 11 and for the purpose of conveniently manipulating the same we provide a circular rail 17 which extends about the outer circumference of the table and is secured thereto by suitable brackets 17, the said rail being offset from the table a suflicient distance to permit convenient gripping thereof. In order to relieve the table of unagainst rotation incidental to a cutting operation we provide a pair of angle iron strips 18 which strips are disposed upon opposite sides of the table slots and are rigidly secured to the bottom face of said table by rivets or other suitable means. The width between the dependiu g flanges of the angle-iron strips is approximately the same width as the boot 8 and as shown in Fig. 3, when the table is in posi tion to be rotated the ends of these strips will revolve about the kerfed face of the boot just clear of the same. When a slot is alined with the boot and cutting edge of the saw-blade it is apparent that the space between the hub sections 12 of this particular slot are also alined with the throat of the block and hence the table can be pushed inwardly to effect a feeding operation. Incidental to the first inward movement of the table the depending flanges of the strips 18, will engage the opposite side-walls of the boot and thus lock the table against rotation. Thereafter it is apparent that a further inward reciprocating movement of the table, will cause the block upon which. the table is mounted, together with said table, to recede from the boot and working stretch of the blade, all of the parts traveling upon the runway, while the saw will travel in the alined table slot until the full feed movement has been completed. The said feed movement is limited by a cross-pin 19 that connects the outer ends of the strips 18, the said cross-pin being adapted to abut the kerfed face of the boot to form a limitation stop. After the complete feed movement has been effected, it is also apparent that the table can be retracted to the position shown in Fig. 3, whereby its hub aperture is brought into a position concentric with the boot so as to again permit rotation of the table.

Provision is made for feeding the meat or other article to be cut across the various slots in the table, the means employed being a hand-actuated feed-roller 20, one of which rollers is arranged parallel with its companion slot, the same being located under the table and mounted upon a spindle 21 that is suspended in ears 21, which ears depend from the bottom face of the table, one end of the spindle being extended through an aperture in the downturned table flange and carrying a hand-wheel whereby the roller is rotated. Each roller is also provided with a plurality of spur-teeth which are adapted to rotate through a series of cross-slots 2:2 in the table top, the said teeth in their rotation being projected above the plane of the table, whereby they will engage the meat or other article to be cut and in thus rotating will cause a forward feed of said article across the saw line.

It is apparent from the foregoing description that a section of meat of a different.

variety, can be placed over-each feed roller and the operator can select that section from which a cut is to be made. The selected cut is then brought forward by rotating the table into alinement with the cutting blade of the working stretch of the saw and by manipulating the feed roller the thickness of the cut is determined, due to the portion of meat being moved a greater or less distance across the adjacent slot. Thereafter the operator pushes the table inward and incidental to the initial feed movement toward the saw, the hub ends of the strips 18 about the central aperture in said table, will engage and straddle the flat saw-guide boot whereby the table will be locked against rotation, the cutting movement thereafter being effected by a full inward stroke of the table, which, together with the block upon which it is mounted, will be supported in its travel by the runway 6.

It is apparent from the foregoing description of the machine and its operation, that a simple and economical device for cutting meat is produced, whereby speed and accuracy in the cutting is effected and also economy, the apparatus being thoroughly sanitary, due to the facts that the metallic table can be readily sterilized and that the operator can manipulate the meats without handling the same as is the case under ordinary conditions. It is also apparent that in some instances we may employ gages'for accurately determining the width of cuts from various portions of meat, which cuts may be from the thinnest sheets to any desired width of roast and owing to the accuracy of the machine, these cuts can be so gaged that they will approximate to the finest degree the desired weight ordered by the customer.

While we have shown and described the table hub as being formed from separate sections secured about the central aperture of the table it is apparent, that in some instances the said hub may form an integral part of the table, the essential function being to provide an'apertured or hollow journal bearing for the table through which the saw travels when the table is in its rotatory position, in which position the working stretch of the saw travels through the central aperture of said table and hollow sleeveblock as shown.

We claim: 1

1. In a band-saw having a frame, upper and lower wheels, and an endless saw-band mounted upon said wheels; the combination of a table having a hollow hub intersected by a plurality of radially disposed slots through which the working stretch of the sawband is adapted to travel, a reciprocative block having a journal upon which the table-hub is mounted, and a runway for the block carried by the saw-frame, the runway being disposed parallel to the fiat faces of said saw-blade.

2. In a band-saw having a frame, upper and lower wheels, and an endless saw-band mounted upon said wheels; the combination of a table having a hollow hub intersected by a plurality of radially disposed slots through which the working stretch of the saw-band is adapted to' travel, a reciprocative block having a journal upon which the table-hub is mounted, means for locking the table against rotation upon the block incidental to a reciprocative movement of said block, and a runway for the block carried by the saw-frame, the runway being disposed parallel to the fiat faces of said sawblade.

3. A sawing machine comprising a frame, a vertically disposed traveling saw-blade carried thereby, a revoluble and reciproca 'tive table disposed about the saw-blade comprising a hollow hub having a plurality of radially disposed slots extending therefrom that are adapted to selectively receive the saw, a reciprocative guide-block upon which the table-hub is mounted, and a locking means carried by the table engageable with the block whereby said table is held against rotation incidental to a reciprocative movement of the block and table.

4:- In a band-saw having a frame, upper and lower wheels, and an endless saw-band mounted upon said wheels; the combination of a runway carried by the frame, the runway being disposed parallel with the faces of the working stretch of the saw, a reciprocative block mounted upon the runway, the block being provided with a sleeve extension and throat slot that extends through the body of the block and said sleeve extension in alinement with the working stretch of the saw-blade, a fixed fiat saw-guide through which said working stretch of the blade is adapted to travel, the saw-guide being arranged to enter the throat slot of the slidable block, a revoluble table disposed about the saw-blade comprising a hollow hub having a plurality of radially disposed slots extending therefrom that are adapted to selectively receivesaid saw-blade, and guide strips carried by the table in alinement with the slots, the guide-strips being arranged to engage the saw-guide boot.

5. In a band-saw having a frame, upper and lower wheels, and an endless saw-band mounted upon said wheels; the combination of a runway carried by the frame, the runway being disposed parallel with the faces of the working stretch of the saw, a reciprocative block mounted upon the runway, the block being provided with a sleeve extension and throat slot that extends through the body of the block and said sleeve extension in alinement with the working stretch of the saw-blade, a fixed flat saw-guide through which said working stretch of the blade is adapted to travel, the saw-guide being arranged to enter the throat slot of the slidable block, a revoluble table disposed about the saw-blade comprising a hollow hub having a plurality of radially disposed slots extending therefrom that are adapted to selectively receive said saw-blade, guidestrips carried by the table in alinement with the slots, the guide-strips being arranged to engage the saw-guide boot, and a series of feed rollers carried by the table one of which is disposed parallel with each radial slot thereof.

6. In a band-saw having a frame, upper and lower wheels, and an endless saw-band mounted upon said wheels; the combination of a runway carried by the frame, a block mounted upon the runway, the block being provided with a sleeve extension having a throat slot that extends through one wall of said sleeve extension and the body portion of the block, a kerfeol saw-guide carried by the frame adapted to travel through the throat slot of the slidable block, a centrally apertured and radially slotted table mounted upon the block sleeve, a plurality of hub members extending from the table adapted to engage the hub sleeve, the hub members being spaced apart to form a series of slots that are alined with the table slots, pairs of parallel guide-strips depending from the bottom face of the table upon opposite sides of its radial slots, the pairs of strips being adapted to engage the saw-guide boot incidental to alinement of a selected table-slot with the sleeve throat and reciprocative movement of said block, and means for feeding articles to be sawed across the plane of each of the table slots.

In testimony that we claim the foregoing we have hereunto set our hands at Sheboygan in the the county of Sheboygan and State of l/Visoonsin in the presence of two witnesses.

MAYNARD A. FRONEY. JOHN H. OPTENBERG.

Witnesses:

T. M. BoWBR, ELSIE M. REMY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

